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Commitments and Contingencies (Tables)
12 Months Ended
Apr. 30, 2017
Commitments and Contingencies Disclosure [Abstract]  
Summary of Future Minimum Payment Under Non-Cancelable Leases

Future minimum payments under the above non-cancelable lease arrangements for the years ending April 30 are as follows:

 

$ in thousands

   Operating  

2018

   $ 1,191  

2019

     655  

2020

     308  

2021

     63  
  

 

 

 

Total minimum lease payments

   $ 2,217